US4131335AExpiredUtility
Photographic lens system
Est. expiryMar 23, 1996(expired)· nominal 20-yr term from priority
Inventors:Tadashi Kimura
G02B 9/60
33
PatentIndex Score
3
Cited by
8
References
16
Claims
Abstract
A photographic lens system of modified Gauss type having five-component six-element lens configuration for which the field angle is 41° to 53°, aperture ratio is F1:2, overall length is short, back focal length is long and aberrations are corrected favorably.
Claims
exact text as granted — not AI-modifiedI claim:
1. A photographic lens system comprising a first, second, third, fourth and fifth lens components, said first lens component being a positive lens with its convex surface postioned toward the object side, said second lens component being a positive meniscus lens with its convex surface positioned toward the object side, said third lens components being a negative meniscus lens with its convex surface positioned toward the object side, said fourth lens component being a negative cemented meniscus doublet with its concave surface positioned toward the object side, said fifth lens component being a positive lens, said photographing lens system satisfying the following conditions: ##EQU8## (3) 0.5f < f.sub.12 < 0.6f (4) -10.7 < r.sub.8 < -0.6 (5) 0.04 < n.sub.5 -n.sub.4 < 0.13 wherein reference symbol ##EQU9## d i represents the overall length of the lens system, reference symbol ##EQU10## d i represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components, reference symbol r 8 represents the radius of curvature of the cemented surface of the fourth lens component, reference symbols n 4 and n 5 respectively represent refractive indices of respective lenses constituting the fourth lens component, and reference symbol f represents the focal length of the lens system as a whole.
2. A photographic lens system according to claim 1 further satisfying the following conditions: (6) 0.9 < -f.sub.3 /f.sub.12 < 1.2 (7) 0.6 < f.sub.56 /-f.sub.4 < 0.85 (8) 0.10f < ε.sub.1 < 0.13f (9) 0.06f < ε.sub.2 < 0.13f wherein reference symbol f 12 represents the total focal length of the first and second lens components, reference symbol f 3 represents the focal length of the third lens component, reference symbol f 4 represents the focal length of the lens on the object side in the fourth lens component, reference symbol f 56 represents the total focal length of the lens on the image side in the fourth lens component and of the fifth lens component, reference symbol ε 1 represents the distance from the secondary principal point of the first and second lens components to the primary principal point of the third lens component, and reference symbol ε 2 represents the distance from the secondary principal point of the lens on the object side in the fourth lens component to the primary principal point of the lens on the image side in the fourth lens component and of the fifth lens component.
3. A photographic lens system according to claim 2 further satisfying the following conditions: (10) 1.8 < n.sub.1, n.sub.2 < 1.84 (11) 35 < ν.sub.1, ν.sub.2 < 47 (12) 0.5f < r.sub.1 < 1.2f (13) 0.33f < r.sub.3 < 0.42f (14) 0 < r.sub.4 /r.sub.5 < 1.0 wherein reference symbols n 1 and n 2 respectively represent refractive indices of the first and second lens components, reference symbols μ 1 and μ 2 respectively represent Abbe's numbers of the first and second lens components, reference symbol r 1 represents the radius of curvature of the surface on the object side of the first lens component, reference symbols r 3 and r 4 respectively represent radii of curvature of respective surfaces of the second lens component, and reference symbol r 5 represents the radius of curvature of the surface on the object side of the third lens component.
4. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 0.56
d.sub.1 = 0.066
n.sub.1 = 1.7859
ν.sub.1 = 44.1
r.sub.2 = 4.829
d.sub.2 = 0.002
r.sub.3 = 0.391
d.sub.3 = 0.055
n.sub.2 = 1.7859
ν.sub.2 = 44.1
r.sub.4 = 0.557
d.sub.4 = 0.026
r.sub.5 = 1.434
d.sub.5 = 0.031
n.sub.3 = 1.7847
ν.sub.3 = 26.22
r.sub.6 = 0.301
d.sub.6 = 0.175
r.sub.7 = -0.326
d.sub.7 = 0.051
n.sub.4 = 1.64769
ν.sub.4 = 33.8
r.sub.8 = -0.818
d.sub.8 = 0.073
n.sub.5 = 1.7725
ν.sub.5 = 49.6
r.sub.9 = -0.462
d.sub.9 = 0.002
r.sub.10 = 22.701
d.sub. 10 = 0.039
n.sub.6 = 1.691
ν.sub.6 = 54.84
r.sub.11 = -0.677
f = 1, f.sub.B = 0.750,
##STR22##
##STR23##
f.sub.12 = 0.513,
n.sub.5 - n.sub.4 = 0.12481
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for d-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for d-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU11## represents the overall length of the lens system, reference symbol ##EQU12## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components.
5. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 0.625
d.sub.1 = 0.066
n.sub.1 = 1.8044
ν.sub.1 = 39.62
r.sub.2 = 3.58
d.sub.2 = 0.002
r.sub.3 = 0.343
d.sub.3 = 0.053
n.sub.2 = 1.8044
ν.sub.2 = 39.62
r.sub.4 = 0.512
d.sub.4 = 0.0022
r.sub.5 = 0.814
d.sub.5 = 0.031
n.sub.3 = 1.84666
ν.sub.3 = 23.9
r.sub.6 = 0.277
d.sub.6 = 0.19
r.sub.7 = -0.335
d.sub.7 = 0.049
n.sub.4 = 1.68893
ν.sub.4 = 31.08
r.sub.8 = -1.518
d.sub.8 = 0.077
n.sub.5 = 1.8061
ν.sub.5 = 40.92
r.sub.9 = -0.495
d.sub.9 = 0.002
r.sub.10 = -5.346
d.sub.10 = 0.042
n.sub.6 = 1.734
ν.sub.6 = 51.52
r.sub.11 = -0.629
f = 1, f.sub.B = 0.736,
##STR24##
##STR25##
f.sub.12 = 0.51,
n.sub.5 - n.sub.4 = 0.11717
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for d-line reference, symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for d-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU13## represents the overall length of the lens system, reference symbol ##EQU14## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components.
6. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 0.535
d.sub.1 = 0.057
n.sub.1 = 1.79952
ν.sub.1 = 42.24
r.sub.2 = 2.422
d.sub.2 = 0.002
r.sub.3 = 0.348
d.sub.3 = 0.037
n.sub.2 = 1.8061
ν.sub.2 = 40.92
r.sub.4 = 0.485
d.sub.4 = 0.030
r.sub.5 = 0.827
d.sub.5 = 0.023
n.sub.3 = 1.7847
ν.sub.3 = 26.22
r.sub.6 = 0.276
d.sub.6 = 0.222
r.sub.7 = -0.311
d.sub.7 = 0.046
n.sub.4 = 1.68893
ν.sub.4 = 31.08
r.sub.8 = -10.647
d.sub.8 = 0.076
n.sub.5 = 1.8061
ν.sub.5 = 40.92
r.sub.9 = -0.406
d.sub.9 = 0.002
r.sub.10 = -21.108
d.sub. 10 = 0.045
n.sub.6 = 1.734
ν.sub.6 = 51.52
r.sub.11 = -0.935
f = 1, f.sub. B = 0.751,
##STR26##
##STR27##
f.sub.12 = 0.521,
n.sub.5 - n.sub.4 = 0.11717
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for d-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for d-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU15## represents the overall length of the lens system, reference symbol ##EQU16## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components.
7. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 0.628
d.sub.1 = 0.066
n.sub.1 = 1.7859
ν.sub.1 = 44.1
r.sub.2 = 5.287
d.sub.2 = 0.002
r.sub.3 = 0.374
d.sub.3 = 0.055
n.sub.2 = 1.7859
ν.sub.2 = 44.1
r.sub.4 = 0.556
d.sub.4 = 0.026
r.sub.5 = 1.103
d.sub.5 = 0.031
n.sub.3 = 1.7847
ν.sub.3 = 26.22
r.sub.6 = 0.298
d.sub.6 = 0.181
r.sub.7 = -0.310
d.sub.7 = 0.046
n.sub.4 = 1.68893
ν.sub.4 = 31.08
r.sub.8 = -0.694
d.sub.8 = 0.074
n.sub.5 = 1.7859
ν.sub.5 = 44.1
r.sub.9 = -0.423
d.sub.9 = 0.002
r.sub.10 = -15.576
d.sub. 10 = 0.04
n.sub.6 = 1.6968
ν.sub.6 = 55.52
r.sub.11 = -0.693
##STR28##
f.sub.12 = 0.528, n.sub.5 = n.sub.4 = 0.09697
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for d-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for d-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU17## represents the overall length of the lens system, reference symbol ##EQU18## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components.
8. A photograhic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 0.622
d.sub.1 = 0.061
n.sub.1 = 1.79952
ν.sub.1 = 42.24
r.sub.2 = 3.373
d.sub.2 = 0.002
r.sub.3 = 0.338
d.sub.3 = 0.047
n.sub.2 = 1.79952
ν.sub.2 = 42.24
r.sub.4 = 0.482
d.sub.4 = 0.026
r.sub.5 = 0.827
d.sub.5 = 0.021
n.sub.3 = 1.7847
ν.sub.3 = 26.22
r.sub.6 = 0.281
d.sub.6 = 0.202
r.sub.7 = -0.32
d.sub.7 = 0.044
n.sub.4 = 1.68893
ν.sub.4 = 31.08
r.sub.8 = -9.853
d.sub.8 = 0.073
n.sub.5 = 1.8061
ν.sub.5 = 40.92
r.sub.9 = -0.409
d.sub.9 = 0.002
r.sub.10 = -11.767
d.sub.10 = 0.052
n.sub.6 = 1.757
ν.sub.6 = 47.87
r.sub.11 = -0.967
##STR29##
f.sub.12 = 0.532, n.sub.5 - n.sub.4 = 0.11717
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for d-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for d-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU19## represents the overall length of the lens system, reference symbol ##EQU20## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components.
9. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 1.1733
d.sub.1 = 0.0623
n.sub.1 = 1.80922
ν.sub.1 = 39.62
r.sub.2 = 69.3990
d.sub.2 = 0.0023
r.sub.3 = 0.3825
d.sub.3 = 0.0449
n.sub.2 = 1.83932
ν.sub.2 = 37.19
r.sub.4 = 0.7111
d.sub.4 = 0.0307
r.sub.5 = 1.3147
d.sub.5 = 0.0223
n.sub.3 = 1.74618
ν.sub.3 = 28.29
r.sub.6 = 0.3059
d.sub.6 = 0.2762
r.sub.7 = -0.2793
d.sub.7 = 0.0228
n.sub.4 = 1.70443
ν.sub.4 = 30.12
r.sub.8 = -0.7955
d.sub.8 = 0.0743
n.sub.5 = 1.80811
ν.sub.5 = 46.57
r.sub.9 = -0.3599
d.sub.9 = 0.0023
r.sub.10 = 5.0534
d.sub.10 = 0.0600
n.sub.6 = 1.73234
ν.sub.6 = 54.68
r.sub.11 = -0.6303
f = 1.0 , f.sub.B = 0.8591 ,
##STR30##
##STR31## f.sub.12 = 0.5720 ,
f.sub.3 = -0.5390
-f.sub.3 /f.sub.12 = 0.9423,
f.sub.4 = -0.6220
f.sub.56 = 0.4287, f.sub.56 /-f.sub.4 = 0.6892
n.sub.5 - n.sub.4 = 0.10368,
r.sub.4 /r.sub.5 = 05409
ε.sub.1 = 0.1013,
ε.sub.2 = 0.0951
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thickness of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for e-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for e-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU21## represents the overall length of the lens system, reference symbol ##EQU22## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components, reference symbol f 56 represents the total focal length of the lens on the image side in the fourth lens component and of the fifth lens component, reference symbol ε 1 represents the distance from the secondary principal point of the first and second lens components to the primary principal point of the third lens component, and reference symbol ε 2 represents the distance from the secondary principal point of the lens on the object side in the fourth lens component to the primary principal point of the lens on the image side in the fourth lens component and of the fifth lens component.
10. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 1.0296
d.sub.1 = 0.0764
n.sub.1 = 1.81077
ν.sub.1 = 40.95
r.sub.2 = -26.4109
d.sub.2 = 0.0023
r.sub.3 = 0.4071
d.sub.3 = 0.0456
n.sub.2 = 1.81077
ν.sub.2 = 40.95
r.sub.4 = 0.7213
d.sub.4 = 0.0269
r.sub.5 = 2.3068
d.sub.5 = 0.0227
n.sub.3 = 1.70443
ν.sub.3 = 30.12
r.sub.6 = 0.3311
d.sub.6 = 0.2426
r.sub.7 = -0.2981
d.sub.7 = 0.0227
n.sub.4 = 1.74618
ν.sub.4 = 28.29
r.sub.8 = -1.0049
d.sub.8 = 0.0838
n.sub.5 = 1.79013
ν.sub.5 = 44.18
r.sub.9 = -0.3617
d.sub.9 = 0.0023
r.sub.10 = -17.5662
d.sub. 10 = 0.0523
n.sub.6 = 1.71615
ν.sub.6 = 53.89
r.sub.11 = -0.7886
f = 1.0 , f.sub.B = 0.8591 ,
##STR32##
##STR33## f.sub.12 = 0.5770 ,
f.sub.3 = -0.5510
-f.sub.3 /f.sub.12 = 0.9549,
f.sub.4 = -0.5760
f.sub.56 = 0.4137, f.sub.56 /-f.sub.4 = 0.7182
r.sub.4 /r.sub.5 = 0.3129,
ε.sub.1 = 0.1026
ε.sub.2 = 0.0905
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for e-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for e-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU23## represents the overall length of the lens system, reference symbol ##EQU24## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components, reference symbol f 56 represents the total focal length of the lens on the image side in the fourth lens component and of the fifth lens component, reference symbol ε 1 represents the distance from the secondary principal point of the first and second lens components to the primary principal point of the third lens component, and reference symbol ε 2 represents the distance from the secondary principal point of the lens on the object side in the fourth lens component to the primary principal point of the lens on the image side in the fourth lens component and of the fifth lens component.
11. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 0.8774
d.sub.1 = 0.0909
n.sub.1 = 1.80811
ν.sub.1 = 46.57
r.sub.2 = 45.5773
d.sub.2 = 0.0023
r.sub.3 = 0.4176
d.sub.3 = 0.0455
n.sub.2 = 1.80811
ν.sub.2 = 46.57
r.sub.4 = 0.6872
d.sub.4 = 0.0273
r.sub.5 = 2.3074
d.sub.5 = 0.0228
n.sub.3 = 1.75453
ν.sub.3 = 35.27
r.sub.6 = 0.3454
d.sub.6 = 0.2275
r.sub.7 = -0.2753
d.sub.7 = 0.0227
n.sub.4 = 1.74618
ν.sub.4 = 28.29
r.sub.8 = -0.7453
d.sub.8 = 0.0732
n.sub.5 = 1.79195
ν.sub.5 = 47.43
r.sub.9 = -0.3401
d.sub.9 = 0.0023
r.sub.10 = 23.5596
d.sub.10 = 0.0566
n.sub.6 = 1.71615
ν.sub.6 = 53.89
r.sub.11 = -0.7118
f = 1.0, f.sub.B = 0.8590,
##STR34##
##STR35## f.sub.12 = 0.585,
f.sub.3 = -0.5410
-f.sub.3 /f.sub.12 = 0.9248,
f.sub.4 = -0.5970
f.sub.56 = 0.4169, f.sub.56 /-f.sub.4 = 0.6983
n.sub.5 - n.sub.4 = 0.04577,
r.sub.4 /r.sub.5 = 0.2978
ε.sub.1 = 0.1115,
ε.sub.2 = 0.0918
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for e-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for e-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU25## represents the overall length of the lens system, reference symbol ##EQU26## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components, reference symbol f 56 represents the total focal length of the lens on the image side in the fourth lens component and of the fifth lens component, reference symbol ε 1 represents the distance from the secondary principal point of the first and second lens components to the primary principal point of the third lens component, and reference symbol ε 2 represents the distance from the secondary principal point of the lens on the object side in the fourth lens component to the primary principal point of the lens on the image side in the fourth lens omponent and of the fifth lens component.
12. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 0.9182
d.sub.1 = 0.0497
n.sub.1 = 1.80922
ν.sub.1 = 39.62
r.sub.2 = 9.0961
d.sub.2 = 0.0022
r.sub.3 = 0.3759
d.sub.3 = 0.0542
n.sub.2 = 1.83932
ν.sub.2 = 37.19
r.sub.4 = 0.5991
d.sub.4 = 0.0241
r.sub.5 = 1.2475
d.sub.5 = 0.0216
n.sub.3 = 1.76843
ν.sub.3 = 27.11
r.sub.6 = 0.3211
d.sub.6 = 0.2182
r.sub.7 = -0.2958
d.sub.7 = 0.0222
n.sub.4 = 1.70443
ν.sub.4 = 30.12
r.sub.8 = -3.9426
d.sub.8 = 0.0862
n.sub.5 = 1.80401
ν.sub.5 = 42.24
r.sub.9 = -0.3745
d.sub.9 = 0.0022
r.sub.10 = 98.8977
d.sub.10 = 0.0322
n.sup.6 = 1.76076
ν.sub.6 = 47.87
r.sub.11 = -0.9124
f = 1.0, f.sub.B = 0.8399,
##STR36##
##STR37## f.sub.12 = 0.5790
f.sub.3 = -0.568, -f.sub.3 /f.sub.12 = 0.9810
f.sub.4 = -0.455, f.sub.56 = 0.3599
f.sub.56 /-f.sub.4 = 0.7910,
n.sub.5 - n.sub.4 = 0.09958
r.sub.4 /r.sub.5 = 0.4802,
ε.sub.1 = 0.1064
ε.sub.2 = 0.0712
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for e-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for e-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU27## represents the overall length of the lens system, reference symbol ##EQU28## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components, reference symbol f 56 represents the total focal length of the lens on the image side in the fourth lens component and of the fifth lens component, reference symbol ε 1 represents the distance from the secondary principal point of the first and second lens components to the primary principal point of the third lens component, and reference symbol ε 2 represents the distance from the secondary principal point of the lens on the object side in the fourth lens component to the primary principal point of the lens on the image side in the fourth lens component and of the fifth lens component.
13. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 0.5886
d.sub.1 = 0.0700
n.sub.1 = 1.80922
ν.sub.1 = 39.62
r.sub.2 = 2.1104
d.sub.2 = 0.0020
r.sub.3 = 0.3385
d.sub.3 = 0.0444
n.sub.2 = 1.83945
ν.sub.2 = 42.72
r.sub.4 = 0.4748
d.sub.4 = 0.0256
r.sub.5 = 0.7149
d.sub.5 = 0.0195
n.sub.3 = 1.79177
ν.sub.3 = 26.22
r.sub.6 = 0.2678
d.sub.6 = 0.2500
r.sub.7 = -0.2793
d.sub.7 = 0.0189
n.sub.4 = 1.70443
ν.sub.4 = 30.12
r.sub.8 = -4.7249
d.sub.6 = 0.0873
n.sub.5 = 1.80922
ν.sub.5 = 39.62
r.sub.9 = -0.3486
d.sub.9 = 0.0020
r.sub.10 = 62.2371
d.sub.10 = 0.0328
r.sub.6 = 1.76076
ν.sub.6 = 47.87
r.sub.11 = -1.0361
f = 0.1, f.sub.B = 0.7565,
##STR38##
##STR39## f.sub.12 = 0.5470,
f.sub.3 = 0.551
-f.sub.3 /f.sub.12 = 1.0073,
f.sub.4 = 0.422
f.sub.56 = 0.3462, f.sub.56 /-f.sub.4 = 0.8204
n.sub.5 - n.sub.4 = 0.10479,
r.sub.4 /r.sub.5 = 0.6641
ε.sub.1 = 0.1178,
ε.sub.2 = 0.0677
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvatuve of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for e-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for e-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU29## represents the overall length of the lens system, reference symbol ##EQU30## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components, reference symbol f 56 represents the total focal length of the lens on the image side in the fourth lens component and of the fifth lens component, reference symbol ε 1 represents the distance from the secondary principal point of the first and second lens components to the primary principal point of the third lens component, and reference symbol ε 2 represents the distance from the secondary principal point of the lens on the object side in the fourth lens component to the primary principal point of the lens on the image side in the fourth lens component and of the fifth lens component.
14. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 0.5715
d.sub.1 = 0.0894
n.sub.1 = 1.81077
ν.sub.1 = 40.95
r.sub.2 = 2.5341
d.sub.2 = 0.0020
r.sub.3 = 0.3809
d.sub.3 = 0.0468
n.sub.2 = 1.81077
ν.sub.2 = 40.95
r.sub.4 = 0.5125
d.sub.4 = 0.0291
r.sub.5 = 1.0418
d.sub.5 = 0.0204
n.sub.3 = 1.79192
ν.sub.3 = 25.71
r.sub.6 = 0.3070
d.sub.6 = 0.2184
r.sub.7 = -0.3060
d.sub.7 = 0.0212
n.sub.4 = 1.70443
ν.sub.4 = 30.12
r.sub.8 = -7.3319
d.sub.8 = 0.1014
n.sub.5 = 1.81077
ν.sub.5 = 40.95
r.sub.9 = -0.3949
d.sub.9 = 0.0020
r.sub.10 = 2.9394
d.sub.10 = 0.0453
n.sub.6 = 1.76076
ν.sub.6 = 47.87
r.sub.11 = -1.3192
f = 1.0, f.sub.B = 0.7560,
##STR40##
##STR41## f.sub.12 = 0.5700
f.sub.3 = -0.556
-f.sub.3 /f.sub.12 = 0.9754,
f.sub.4 = -0.454
f.sub.56 = 0.3623, f.sub.56 /-f.sub.4 = 0.7980
n.sub.5 - n.sub.4 = 0.10634,
r.sub.4 /r.sub.5 = 0.4919
ε.sub.1 = 0.1322,
ε.sub.2 = 0.0768
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for e-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for e-line, reference symbol f represents the focal length of the lens system as a whole, reference sybol f B represents the back focal length of the lens system, reference symbol ##EQU31## represents the overall length of the lens system, reference symbol ##EQU32## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components, reference symbol f 56 represents the total focal length of the lens on the image side in the fourth lens component and of the fifth lens component, reference symbol ε 1 represents the distance from the secondary principal point of the lens on the object side in the fourth lens component to the primary principal point of the lens on the image side in the fourth lens component and of the fifth lens component.
15. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 0.8965
d.sub.1 = 0.0820
n.sub.1 = 1.80922
ν.sub.1 = 39.62
r.sub.2 = 27.8344
d.sub.2 0.0022
r.sub.3 = 0.4067
d.sub.3 = 0.0509
n.sub.2 = 1.80401
ν.sub.2 = 42.24
r.sub.4 = 0.6499
d.sub.4 = 0.0309
r.sub.5 = 2.0122
d.sub.5 = 0.0242
n.sub.3 = 1.72734
ν.sub.3 = 29.24
r.sub.6 = 0.3342
d.sub.6 = 0.2196
r.sub.7 = -0.3022
r.sub.7 = 0.0227
n.sub.4 = 1.74618
ν.sub.4 = 28.29
r.sub.8 = -1.6884
d.sub.9 = 0.0833
n.sub.5 = 1.80922
ν.sub.5 = 39.62
r.sub.9 = -0.3945
d.sub.9 = 0.0022
r.sub.10 = ∞
d.sub.10 = 0.0556
n.sub.6 = 1.71615
ν.sub.6 = 53.89
r.sub.11 = -0.6647
f = 1.0, f.sub.B = 0.8400,
##STR42##
##STR43## f.sub.12 =0.5990,
f.sub.3 = 0.558
-f.sub.3 /f.sub.12 = 0.9316,
f.sub.4 = -0.501
f.sub.56 = 0.3762, f.sub.56 /-f.sub.4 = 0.7509
n.sub.5 - n.sub.4 = 0.06304,
r.sub.4 /r.sub.5 = 0.3230
ε.sub.1 = 0.1200,
ε.sub.2 = 0.0829
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for e-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for e-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU33## represents the overall length of the lens system, reference symbol ##EQU34## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components, reference symbol f 56 represents the total focal length of the lens on the image side in the fourth lens component and of the fifth lens component, reference symbol ε 1 represents the distance from the secondary principal point of the first and second lens components to the primary principal point of the third lens component and reference symbol ε 2 represents the distance from the secondary principal point of the lens on the object side in the fourth lens component to the primary principal point of the lens on the image side in the fourth lens component and of the fifth lens component.
16. A photographic lens system according to claim 1, in which said photographic lens system has the following numerical data: ______________________________________
r.sub.1 = 0.7303
d.sub.1 = 0.0592
n.sub.1 = 1.83932
ν.sub.1 = 37.19
r.sub.2 = 7.5746
d.sub.2 = 0.0022
r.sub.3 = 0.4184
d.sub.3 = 0.0477
n.sub.2 = 1.83932
ν.sub.2 = 37.19
r.sub.4 = 0.6068
d.sub.4 = 0.0303
r.sub.5 = 1.8122
d.sub.5 = 0.0240
n.sub.3 = 1.79192
ν.sub.3 = 25.71
r.sub.6 = 0.3432
d.sub.6 = 0.2194
r.sub.7 = -0.3075
d.sub.7 = 0.0322
n.sub.4 = 1.723.11
ν.sub.4 = 29.51
r.sub.8 = -1.2595
d.sub.8 = 0.0800
n.sub.5 = 1.79013
ν.sub.5 = 44.18
r.sub.9 = -0.4037
d.sub.9 = 0.0022
r.sub.10 = -50.5607
d.sub. 10 = 0.0582
n.sub.6 = 1.75844
ν.sub.6 = 52.33
r.sub.11 = -0.7067
f = 1.0, f.sub.B = 0.8385,
##STR44##
##STR45## f.sub.12 = 0.5710,
f.sub.3 = -0.539
-f.sub.3 /f.sub.12 = 0.9440,
f.sub.4 = -0.571
f.sub.56 = 0.4131, f.sub.56 /-f.sub.4 = 0.7235
n.sub.5 - n.sub.4 = 0.06702,
r.sub.4 /r.sub.5 = 0.3348
ε.sub.1 = 0.1136,
ε.sub.2 = 0.0951
______________________________________
wherein reference symbols r 1 through r 11 respectively represent radii of curvature of respective lens surfaces, reference symbols d 1 through d 10 respectively represent thicknesses of respective lenses and airspaces between respective lenses, reference symbols n 1 through n 6 respectively represent refractive indices of respective lenses for e-line, reference symbols ν 1 through ν 6 respectively represent Abbe's numbers of respective lenses for e-line, reference symbol f represents the focal length of the lens system as a whole, reference symbol f B represents the back focal length of the lens system, reference symbol ##EQU35## represents the overall length of the lens system, reference symbol ##EQU36## represents the length from the surface on the object side of the first lens component to the surface on the image side of the third lens component, reference symbol f 12 represents the total focal length of the first and second lens components, reference symbol f 56 represents the total focal length of the lens on the image side in the fourth lens component and of the fifth lens component, reference symbol ε 1 represents the distance from the secondary principal point of the first and second lens components to the primary principal point of the third lens component, and reference symbol ε 2 represents the distance from the secondary principal point of the lens on the object side in the fourth lens component to the primary principal point of the lens on the image side in the fourth lens component and of the fifth lens component.Join the waitlist — get patent alerts
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